Rear bumper diffuser



FIG. 1 is a front perspective view thereof,

FIG. 2 is a front side elevation view thereof,

FIG. 3 is a back side view thereof,

FIG. 4 is a front side view thereof,

FIG. 5 is a bottom side view thereof,

FIG. 6 is a top side view thereof,

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof. 

CLAIM The ornamental design for a rear bumper diffuser, as shown and described. 